Has anyone confirmed there is a standard wire loom for all nv200's . I'm wanting to install some SV items on my S and need to know if the plugs are there for example rear speakers my van does not have them but there is a cover on each side that might house a speaker on the SV models or add another 12 volt plug . The SV has a 12 v plug in back of he center housing between the seats . I remember Toyota did this back in the day for the dealer upgrades etc has anyone found this .